Simultaneous Seismic Phase Picking and Polarity Determination with an Attention-Based Neural Network

DOI number:10.1785/0220220247

Affiliation of Author(s):中国科学技术大学地球和空间科学学院

Journal:Seismological Research Letters

Place of Publication:美国

Abstract:Earthquake focal mechanisms present information on fault plane and stress direction, which is crucial for understanding tectonics and seismicity. Source focal mechanisms of small earthquakes are often difficult to determine from waveform modeling but feasible to infer from initial polarities. Here, we employ a state-of-the-art neural network infused with an attention mechanism to simultaneously pick arrivals and determine the first-motion polarity. The model is trained and tested with data from southern California. Compared with polarity inference with manual picks in the catalog, predicted po

First Author:Ji Zhang

Co-author:Zefeng Li, Jie Zhang

Indexed by:Journal paper

Correspondence Author:Jie Zhang

Document Code:26

Discipline:Natural Science

First-Level Discipline:Geophysics

Document Type:SCI

Volume:94

Issue:2A

Page Number:813-828

ISSN No.:0895-0695

Translation or Not:no

Date of Publication:2023-01-19

Links to published journals:https://doi.org/10.1785/0220220247